Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel
The continued emissions of anthropogenic carbon dioxide are causing progressive ocean acidification (OA). While deleterious effects of OA on biological systems are well documented in the growth of calcifying organisms, lesser studied impacts of OA include potential effects on gamete interactions tha...
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crroyalsociety:10.1098/rsbl.2022.0042 2024-09-30T14:40:42+00:00 Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel Lymbery, Rowan A. Brouwer, Jill Evans, Jonathan P. Australian Research Council 2022 http://dx.doi.org/10.1098/rsbl.2022.0042 https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2022.0042 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsbl.2022.0042 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Biology Letters volume 18, issue 4 ISSN 1744-957X journal-article 2022 crroyalsociety https://doi.org/10.1098/rsbl.2022.0042 2024-09-09T06:01:31Z The continued emissions of anthropogenic carbon dioxide are causing progressive ocean acidification (OA). While deleterious effects of OA on biological systems are well documented in the growth of calcifying organisms, lesser studied impacts of OA include potential effects on gamete interactions that determine fertilization, which are likely to influence the many marine species that spawn gametes externally. Here, we explore the effects of OA on the signalling mechanisms that enable sperm to track egg-derived chemicals (sperm chemotaxis). We focus on the mussel Mytilus galloprovincialis , where sperm chemotaxis enables eggs to bias fertilization in favour of genetically compatible males. Using an experimental design based on the North Carolina II factorial breeding design, we test whether the experimental manipulation of seawater pH (comparing ambient conditions to predicted end-of-century scenarios) alters patterns of differential sperm chemotaxis. While we find no evidence that male–female gametic compatibility is impacted by OA, we do find that individual males exhibit consistent variation in how their sperm perform in lowered pH levels. This finding of individual variability in the capacity of ejaculates to respond to chemoattractants under acidified conditions suggests that climate change will exert considerable pressure on male genotypes that can withstand an increasingly hostile fertilization environment. Article in Journal/Newspaper Ocean acidification The Royal Society Biology Letters 18 4 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
The continued emissions of anthropogenic carbon dioxide are causing progressive ocean acidification (OA). While deleterious effects of OA on biological systems are well documented in the growth of calcifying organisms, lesser studied impacts of OA include potential effects on gamete interactions that determine fertilization, which are likely to influence the many marine species that spawn gametes externally. Here, we explore the effects of OA on the signalling mechanisms that enable sperm to track egg-derived chemicals (sperm chemotaxis). We focus on the mussel Mytilus galloprovincialis , where sperm chemotaxis enables eggs to bias fertilization in favour of genetically compatible males. Using an experimental design based on the North Carolina II factorial breeding design, we test whether the experimental manipulation of seawater pH (comparing ambient conditions to predicted end-of-century scenarios) alters patterns of differential sperm chemotaxis. While we find no evidence that male–female gametic compatibility is impacted by OA, we do find that individual males exhibit consistent variation in how their sperm perform in lowered pH levels. This finding of individual variability in the capacity of ejaculates to respond to chemoattractants under acidified conditions suggests that climate change will exert considerable pressure on male genotypes that can withstand an increasingly hostile fertilization environment. |
author2 |
Australian Research Council |
format |
Article in Journal/Newspaper |
author |
Lymbery, Rowan A. Brouwer, Jill Evans, Jonathan P. |
spellingShingle |
Lymbery, Rowan A. Brouwer, Jill Evans, Jonathan P. Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
author_facet |
Lymbery, Rowan A. Brouwer, Jill Evans, Jonathan P. |
author_sort |
Lymbery, Rowan A. |
title |
Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
title_short |
Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
title_full |
Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
title_fullStr |
Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
title_full_unstemmed |
Ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
title_sort |
ocean acidification alters sperm responses to egg-derived chemicals in a broadcast spawning mussel |
publisher |
The Royal Society |
publishDate |
2022 |
url |
http://dx.doi.org/10.1098/rsbl.2022.0042 https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2022.0042 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsbl.2022.0042 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biology Letters volume 18, issue 4 ISSN 1744-957X |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsbl.2022.0042 |
container_title |
Biology Letters |
container_volume |
18 |
container_issue |
4 |
_version_ |
1811643189973483520 |